php只能在本地服务器网站跟目录创建目录吗？不能在其它盘创建吗？

PHP code

<?php
    function copyDir($dirSrc,$dirTo){
        if(is_file($dirTo)){
            echo "目标不是目录不能创建";
            return ;
        }
        if(!file_exists($dirTo)){
            mkdir($dirTo);
        }
        
        if($dir_handle=@opendir($dirSrc)){
            while ($filename = readdir($dir_handle)){
                if($filename != "." && $filename != ".."){
                    $subSrcFile = $dirSrc."\\".$filename;
                    $subToFile = $dirTo."\\".$filename;
                    
                    if(is_dir($subSrcFile)){
                        copyDir($subSrcFile,$subToFile);
                    }
                    if(is_file($subSrcFile)){
                        copy($subSrcFile,$subToFile);
                    }
                }
            }
            closedir($dir_handle);
        }
    }
    copyDir("myphp","D:\\admin");
?>

把盘符去了，就可以创建。不知道为什么不到copy到其它盘
加盘符就会出现错误
如：Warning: is_file() [function.is-file]: open_basedir restriction in effect. File(D:\admin) is not within the allowed path(s): (E:\web) in E:\web\copyFile.php on line 3

Warning: file_exists() [function.file-exists]: open_basedir restriction in effect. File(D:\admin) is not within the allowed path(s): (E:\web) in E:\web\copyFile.php on line 7

Warning: mkdir() [function.mkdir]: open_basedir restriction in effect. File(D:\admin) is not within the allowed path(s): (E:\web) in E:\web\copyFile.php on line 8

Warning: is_file() [function.is-file]: open_basedir restriction in effect. File(D:\admin\file) is not within the allowed path(s): (E:\web) in E:\web\copyFile.php on line 3

Warning: file_exists() [function.file-exists]: open_basedir restriction in effect. File(D:\admin\file) is not within the allowed path(s): (E:\web) in E:\web\copyFile.php on line 7

Warning: mkdir() [function.mkdir]: open_basedir restriction in effect. File(D:\admin\file) is not within the allowed path(s): (E:\web) in E:\web\copyFile.php on line 8

Warning: copy() [function.copy]: open_basedir restriction in effect. File(D:\admin\file\wo.txt) is not within the allowed path(s): (E:\web) in E:\web\copyFile.php on line 21

Warning: copy(D:\admin\file\wo.txt) [function.copy]: failed to open stream: Operation not permitted in E:\web\copyFile.php on line 21

Warning: copy() [function.copy]: open_basedir restriction in effect. File(D:\admin\in.txt) is not within the allowed path(s): (E:\web) in E:\web\copyFile.php on line 21

Warning: copy(D:\admin\in.txt) [function.copy]: failed to open stream: Operation not permitted in E:\web\copyFile.php on line 21


------解决方案--------------------
你这个是各种错,路径不对,权限不对,自己检查清楚.
你是虚拟主机?